1030 results about "Raw water" patented technology

The invention discloses a nickel-containing etching wastewater treatment process, which belongs to the technical field of environmental protection, and comprises a raw water regulating tank, a pH pre-regulating tank, a heterogeneous catalytic oxidation tower, a neutralization coagulation tank, an inclined tube sedimentation tank and a clean water tank which are connected in sequence. According to the process, under the neutral condition, a catalyst loaded with cobalt manganese oxide is used for activating sodium hydrogen persulfate, high-activity sulfate free radicals are generated, a Ni-EDTA complex structure is fractured in a targeted mode, free nickel ions are released in situ, organic ligands are synchronously mineralized, and the adding amount of sodium hydrogen persulfate is dynamically adjusted through a clean water pool closed-loop control system; and high-purity nickel hydroxide precipitate is generated through alkaline precipitation and coagulation, so that efficient solid-liquid separation is realized. The treatment process disclosed by the invention is compact in flow and stable in operation, effectively solves the problems of difficult complex breaking, low nickel removal efficiency, high sludge toxicity, difficult resource recovery and the like when the EDTA complex nickel wastewater is treated by a traditional method, realizes closed-loop recovery of nickel resources, and has the remarkable advantages of low cost, high efficiency and environmental friendliness.

The invention relates to the field of water treatment intelligent dosing control, and provides an intelligent dosing control method and system based on multi-source data fusion and time sequence prediction.The method comprises the steps that a raw water working condition, colloid electrical property balance and floc form attribute set are extracted, and the basic dosing matching amount is determined; obtaining a dynamic delay constant according to the volume of the sedimentation tank and an instantaneous flow value, and generating a causal mapping sample set by combining the three types of attribute sets and effluent turbidity signals of the sedimentation tank; generating a dynamic weight factor sequence according to the causal mapping sample set, and performing point-by-point inner product on the causal mapping sample set to generate a process condition sensitive feature set; and generating a predicted effluent turbidity value based on the process working condition sensitive feature set, performing reverse game optimization through the effluent target turbidity, generating an agent supplementing correction increment, and performing amplitude limiting truncation in combination with the basic agent adding proportioning amount to generate an agent adding control instruction. According to the invention, multi-source heterogeneous working condition sensing features and space-time causal alignment logic are fused, and an intelligent dosing decision and feedback compensation closed-loop mechanism is constructed.

The invention relates to the field of direct drinking water of a fusion calculation model, and discloses a double-membrane mixing direct drinking water system and an operation method.The method comprises the steps that online data of a water supply end and a water quality monitoring end are collected for cleaning and time alignment, and a basic working condition data set is formed; the method comprises the following steps: establishing an operation characteristic model comprising water demand prediction, raw water quality prediction and membrane flux characteristic sub-models, calculating double-membrane target water yield and water quality indexes based on the model to generate a control parameter set, evaluating membrane pollution to generate an online cleaning task queue, performing joint simulation to generate a pressure stability control instruction set, and dynamically correcting the model. The conversion from passive response to active pre-judgment of the double-membrane mixing direct drinking water system is realized, and the operation stability, the water quality guarantee capability and the water-saving and energy-saving effects are improved.

The utility model discloses a semi-automatic backwashing laminated filter. The external structure of the semi-automatic backwashing laminated filter comprises a handle, a filter base body, a water inlet, a water outlet, a laminated shell, a blow-down valve, a blockage indicator, a filter screen flushing valve and the like, the internal structure comprises a flow direction selector, a butterfly check valve, a laminated filter element, a rotational flow centrifugal disc, a laminated compression inner cover, a laminated compression outer cover, a spring between the laminated compression inner cover and the laminated compression outer cover and the like. The channel position of the flow direction selector is switched by rotating the handle, so that the switching between the filtering mode and the backwashing mode is realized. In a filtering mode, muddy water flows into a raw water cavity outside the lamination after being accelerated by the rotational flow centrifugal disc, impurities are intercepted, and clear water flows into a downstream pipeline; and in a backwashing mode, the water flow is sprayed out from the spraying holes in the filter element frame by pressing the position of the lamination for compressing the inner cover and loosening the lamination, so that impurities are eluted from the lamination and discharged through the blow-down valve. In addition, a filter screen is arranged on the flow direction selector to intercept impurities of flushing water, and the filter screen can be flushed in a filtering mode. The utility model has the advantages of convenient use and simple structure.

The invention discloses a water level prediction method based on an improved intelligent algorithm, a readable storage medium and a device, and belongs to the technical field of water level prediction.The method comprises the steps that normalization preprocessing is conducted on original hydrological data of multi-source information, and an original water level sequence is obtained; performing VMD decomposition on the original water level sequence to decompose the original water level sequence into modal components; inputting the modal component into an LSTM model to construct a prediction model; and inputting an original water level sequence of recent multiple days into the prediction model, generating a predicted value of a future date based on an iteration mode, and restoring to obtain real water level data through reverse normalization processing. A computer program is stored in the readable storage medium, and the method is carried out when the computer program is executed. The apparatus includes a memory, a processor, and a terminal program stored in the memory and operable in the processor. Water level influence factors can be comprehensively considered, multiple variables are fused, the water level condition closer to the reality is obtained through analysis, and the water level prediction precision is improved.

The embodiment of the utility model discloses a purified water dispenser which comprises a water softening system, a water purifying system and a controller, a water inlet of the water softening system is used for receiving raw water, and a water outlet of the water softening system can output soft water; a water inlet of the water purification system is communicated with a water outlet of the water softening system, a water outlet of the water purification system is used for outputting purified water, the water purification system comprises a filtering system and a wastewater drainage pipeline, a water inlet of the filtering system is communicated with the water inlet of the water purification system, and a water outlet of the filtering system is communicated with the water outlet of the water purification system; a wastewater port of the filtering system is communicated with a wastewater drainage pipeline; the controller is connected with the soft water system and is connected with the wastewater drainage pipeline; when the water outlet of the water softening system outputs hard water, the controller is used for controlling the wastewater drainage pipeline to increase the wastewater discharge capacity so as to protect the filtering system, and the filter element can have the normal service life.

The utility model provides a water purifier. The water purifier comprises a filter element assembly, a shell, a conductivity sensor and a turbidity sensor, the filter element assembly is arranged in the shell, and a filter cavity is formed between the filter element assembly and the shell; the shell is provided with a water inlet and a water outlet, the water inlet is communicated with the filter chamber, a filter inlet of the filter element assembly is communicated with the filter chamber, and a filter outlet of the filter element assembly is communicated with the water outlet; the conductivity sensor is arranged at the water inlet, the turbidity sensor is arranged on the shell or the filter element assembly, and the detection end of the turbidity sensor is used for detecting the quality of raw water in the filter cavity. According to the utility model, through dual monitoring of the conductivity sensor and the turbidity sensor, the attenuation slope is obtained by fitting conductivity and turbidity data, and the attenuation slope is compared with a filter element service life attenuation slope database, so that the service life of the filter element can be predicted more accurately.

The invention relates to the technical field of water quality monitoring, and discloses a sewage quality on-line monitoring method and system.The sewage quality on-line monitoring method comprises the steps that time alignment processing and data quality evaluation are conducted on original water quality sequences collected at all monitoring point positions, and aligned data and data quality weights are obtained; constructing a time delay space diagram; performing joint estimation on the global water quality state to obtain global state estimation and uncertainty; performing anomaly detection and identifying an abnormal propagation path and a suspected source to obtain an anomaly score and a source confidence sorting list; formulating a self-adaptive sampling strategy, and determining the sampling frequency of each monitoring point position; on the basis of the time-delay observation equation and weighted optimization, online joint estimation of the global water quality hidden state is achieved, reverse traceability is carried out by combining the residual standardization anomaly score and the time-delay space diagram, the anomaly can be found, the possible source and propagation direction of the anomaly can be located, and the pertinence and interpretability of disposal are improved.

The invention belongs to the technical field of intelligent household appliances, and particularly relates to a control method and equipment of water purification equipment and a storage medium. The method comprises the steps that human physiological data of a target user is obtained through cloud equipment, the cloud equipment classifies the target user based on the human physiological data, and the cloud equipment determines a water purification scheme for the target user based on the classification of the target user and the human physiological data of the target user, the cloud equipment sends the water purification scheme to water purification equipment, and the water purification equipment adjusts the water purification equipment based on the water purification scheme and a raw water detection result; according to the method, the water quality of the water purification equipment is adjusted according to the intake requirements of different types of user groups on trace elements, the intelligence of the water purification equipment is improved, and the user experience is improved.

A granulation fluidized bed-bioreactor process combined system and method for treating wastewater and promoting sludge granulation, the system comprising: a first inlet end of a rapid stirring pool is communicated with sewage, a second inlet end of the rapid stirring pool is communicated with a PAC dosing barrel through a PAC dosing pump, outlet ends of the rapid stirring pool and the PAM dosing barrel are both communicated with a fluidized bed water inlet of a granulation fluidized bed, the granulation fluidized bed is provided with a reflux port at the top, and a fluidized bed water outlet is communicated with a bioreactor; sewage enters the rapid stirring pool, a PAC dosing barrel injects PAC reagent into the rapid stirring pool to destabilize raw water, the destabilized raw water flows into the granulation fluidized bed, mixes with PAM reagent injected into the granulation fluidized bed by a PAM dosing barrel, and realizes solid-liquid separation, supernatant of the granulation fluidized bed enters the bioreactor for reaction; carbon-rich products after separation are collected for carbon recovery; the two processes are combined to realize rapid granulation and stable operation under the condition of ensuring water quality.

The invention discloses a water plant intelligent dosing control method based on a migration reinforcement learning algorithm, and particularly relates to the technical field of water plant intelligent dosing control, and the method comprises the steps: obtaining the operation data of a target water plant, unifying the operation data time axis, sequentially splicing the operation data at a plurality of adjacent moments according to a preset window length, and outputting a state sequence; and based on the operation data in the state sequence, establishing a calibration model by taking the clarification section effluent turbidity original reading and the raw water temperature as input characteristics and a manual measured value as a supervision target, and outputting the corrected clarification section effluent turbidity. An old plant dosing model is migrated to a target water plant, and dynamic evaluation and constraint correction are performed on clarification section turbidity, filtration section turbidity and converted dosing rate based on a reward function in an operation process, so that cycle-by-cycle reinforcement learning updating and optimization of a dosing strategy are realized.

The invention provides a water plant raw water and clear water lifting pump station joint optimization energy-saving dispatching method and system for solving the problems that traditional pump station dispatching depends on artificial experience, global optimization is lacked, and energy waste is serious. Comprising the steps that a flow-lift and flow-efficiency relation model is established, and a variable frequency pump deduces a performance formula under any frequency based on the similarity law; in the first-stage optimization scheduling, the optimal flow of a water intake pumping station and the optimal water storage level of a clean water tank in each time period are determined by adopting a dynamic programming algorithm and taking the minimum total work of the system as a target, and the conditions of flow balance, water level constraint and the like are met; and in the second-stage optimization scheduling, the genetic algorithm is adopted to optimize the combination and operation frequency of the water pumps in each time period by taking the minimum total power of the pump set as a target, and a flow and lift deviation penalty term is introduced. According to the method, water taking, water storage and water supply whole-process collaborative optimization is achieved, the energy saving rate exceeds 10%, the operation cost is reduced, the method adapts to dynamic changes of the water source tide level and the water demand, and the dispatching intelligent level is improved.

The purification water dispenser comprises a water softening system, a water purification system and a hot water system, the water softening system is communicated with a raw water inlet of the purification water dispenser, the water purification system comprises a reverse osmosis filter element and a booster pump, and a water inlet of the reverse osmosis filter element is communicated with a first soft water outlet channel of the water softening system; the booster pump is arranged between a first soft water outlet channel of the water softening system and a water inlet of the reverse osmosis filter element, a water inlet of the hot water system is communicated with a water outlet of the reverse osmosis filter element, and the hot water system is used for providing hot water softened by the water softening system and purified by the water purification system for a user. According to the technical scheme, raw water can be softened through the water softening system, and the concentration of calcium and magnesium ions in water entering the reverse osmosis filter element is reduced, so that the service life of the reverse osmosis filter element is prolonged.

The invention relates to an automatic control method and system for water purification treatment, and relates to the technical field of water purification treatment, and the method comprises the following steps: collecting raw water detection parameters and reference detection parameters; the flocculation adding amount is obtained through raw water detection parameters; calling the detected water turbidity from the raw water detection parameters; calling a reference turbidity range from the reference detection parameters; obtaining a detection rotating speed according to the falling condition of the detected water turbidity and the reference turbidity range; adding a flocculating agent into a preset grid flocculation basin according to the flocculation adding amount, and synchronously controlling a stirring device preset in the grid flocculation basin to operate at a detection rotating speed; collecting the turbidity of an outlet of the flocculation basin; and the flocculation dosage is updated based on the turbidity of the outlet of the flocculation basin. The water purification device has the effect of improving the water purification treatment efficiency.

The invention discloses a seawater tritium activity monitoring pretreatment device based on membrane separation, and relates to the technical field of surface water and seawater treatment.The seawater tritium activity monitoring pretreatment device comprises a raw water tank, a primary water treatment module, a water storage tank, a secondary water treatment module, a water producing end and a concentrated water discharging end; a concentrated water outlet of the first-stage water treatment module is communicated with an inlet of the concentrated water discharge end, and a produced water outlet of the first-stage water treatment module can be communicated with a produced water end, or an inlet of the water storage tank, an outlet of the water storage tank is communicated with an inlet of the second-stage water treatment module, and a concentrated water outlet of the second-stage water treatment module is communicated with an inlet of the concentrated water discharge end; a produced water outlet of the secondary water treatment module is communicated with a produced water end, and an outlet of a concentrated water discharge end can be communicated with a raw water tank and a water storage tank. Under the condition that the raw water is insufficient, the use amount of the raw water is reduced, the overall efficiency of the water purification system is improved, the quality of produced water is ensured, and the accuracy of subsequent seawater tritium activity monitoring is ensured.

The invention discloses a method for realizing deep autotrophic nitrogen removal of sludge digestion liquid based on alternate intermittent aeration of a double-membrane aeration bio-membrane reactor (MABR). The process device comprises a sludge digestion liquid raw water tank, a single-stage double-MABR reactor, two MABR devices and a water outlet tank. According to the method, sludge digestion liquid enters the single-stage double-MABR reactor, the two MABR devices are alternately and intermittently aerated, the state of one aeration and one aeration stopping is always kept, and ammonia nitrogen in raw water is converted into nitrite through ammonia oxidizing bacteria enriched on the inner side of an MABR membrane. And simultaneously supplying to anaerobic ammonium oxidation bacteria enriched on the outer sides of the two MABR membranes through matrix diffusion for denitrification and generation of nitrate. Denitrifying bacteria enriched on the outer side of the MABR membrane utilize raw water organic matters to drive short-cut denitrification to synchronously supply nitrite to anaerobic ammonium oxidation bacteria so as to realize deep autotrophic nitrogen removal. According to the invention, a double-anaerobic ammonia oxidation reaction hot area is constructed through alternate intermittent aeration of double MABRs, and efficient deep autotrophic nitrogen removal of the sludge digestion liquid can be stably realized.

The purification water dispenser comprises a water softening system and a water purification system, the water softening system is communicated with a raw water inlet of the purification water dispenser, the water purification system comprises a reverse osmosis filter element, a waste water backflow pipeline and a booster pump, and a water inlet of the reverse osmosis filter element is communicated with a water outlet of the water softening system. A water outlet of the reverse osmosis filter element is communicated with a pure water outlet of the purified water dispenser, a water inlet of the wastewater backflow pipeline is communicated with a wastewater opening of the reverse osmosis filter element, a water outlet of the wastewater backflow branch is communicated with a water inlet of the reverse osmosis filter element, and the booster pump is arranged between a water outlet of the water softening system and the water inlet of the reverse osmosis filter element. Through the arrangement, the water softening system firstly softens raw water to reduce the concentration of calcium and magnesium ions in water entering the reverse osmosis filter element, so that the calcium and magnesium ions are prevented from forming scale on the membrane surface of the reverse osmosis filter element, and the service life of the reverse osmosis filter element is further prolonged.

The utility model discloses a portable water purifier. The portable water purifier comprises a filtering unit and a power device, wherein the filtering unit comprises a raw water inlet and a purified water outlet; the power device comprises a shell and at least one piston movably arranged in the shell, two pressure cavities are defined by the piston and the shell, each pressure cavity is correspondingly provided with a raw water inlet and a raw water outlet, the raw water outlet is communicated with the raw water inlet, and the piston moves back and forth in the shell to enable each pressure cavity to be switched between a negative pressure state and a positive pressure state; and in the back-and-forth movement process of the piston, one of the two pressure cavities is in a negative pressure state, and the other pressure cavity is correspondingly in a positive pressure state. According to the portable water purifier provided by the invention, in the back-and-forth movement process of the piston, the two pressure cavities alternately convey raw water to the filtering unit, so that the filtering unit can continuously discharge water, the problem of discontinuous water discharge is solved, the water discharge flow is favorably increased, the water discharge amount in unit time is large, and the operation is more time-saving and labor-saving.

A water path system, comprising a partition plate (721), a booster pump (75), a raw water tank (72), a purified water tank (73), a water purifier (74), a total dissolved solids meter (96), and a concentrated water valve. The water purifier (74) is provided with a water inlet end (23), a concentrated water outlet end (24), and a purified water outlet end (25). The partition plate (721) partitions an inner bottom surface of the raw water tank (72), such that the raw water tank (72) is divided into a raw water tank (7211) and a concentrated water tank (7212). An input end of the booster pump (75) is communicated with the raw water tank (7211) by means of a pipe. An output end of the booster pump (75) is communicated with the water inlet end (23) by means of a pipe. Two ends of the concentrated water valve are respectively communicated with the concentrated water tank (7212) and the concentrated water outlet end (24) by means of pipes. The purified water outlet end (25) is communicated with an input end of the purified water tank (73) by means of a water outlet pipe. The total dissolved solids meter (96) is arranged on the water outlet pipe. The total dissolved solids meter (96) is used for detecting a liquid flowing through the water outlet pipe. The water path system can utilize concentrated water for recycling, thereby effectively saving water resources.

The application discloses a kind of advanced oxidation filtration system and method, the outlet of solution tank is connected with the inlet of pipeline mixer by first pipeline, the outlet of raw water tank is connected with the inlet of pipeline mixer by second pipeline, the outlet of raw water tank is connected with the inlet of US activated filter by third pipeline, the outlet of pipeline mixer is connected with the inlet of US activated filter by ultraviolet generator, first turbidimeter is arranged on the second pipeline;The water outlet of US activated filter is connected with the inlet of water production tank by fourth pipeline, second turbidimeter is arranged on the fourth pipeline in sequence along water flow direction;Ultrasonic probe is arranged on the US activated filter, and the ultrasonic probe is connected with alternating current power supply by ultrasonic generator main body, and the system and method can be handled at low cost.

This invention discloses a method and system for purifying and treating release agents, belonging to the field of release agent purification and treatment. The treatment method is as follows: S1, raw release agent wastewater is introduced into a treatment tank for hydraulic cavitation treatment, while ozone is simultaneously introduced. Floating oil, waste wax, and solid particulate matter in the wastewater float to the surface of the treatment tank and overflow into a scum tank; S2, after cavitation treatment, when there is very little scum on the surface of the treatment tank, the treated liquid in the treatment tank is introduced into a media filter for further filtration. The filtered clean liquid is then transported to a supply tank; S3, when the media packing adsorbs a thick wax layer, the pressure in the filter tank reaches a threshold. Water from the circulating water tank is introduced into the filter tank to backwash the wax layer. The water containing wax after backwashing enters the circulating water tank; S4, when the wax content in the circulating water in the circulating water tank reaches a threshold, a low-temperature steel roller is used to cool the water, causing wax to precipitate onto the steel roller. The wax is scraped off and collected, and the water is reused. This invention uses hydraulic cavitation to break out and remove oil and wax from waste liquid, and further removes residual waste wax from the treated liquid through media filtration, ensuring the cleanliness of the recycled mold release agent liquid.

The application discloses a filter element and a water purifier. When the filter element and the water purifier are used, the first switch element can be driven to move, so that the first switch element and the inner wall of the first installation channel form a third water flow channel which is communicated with the first water flow channel, and the second switch element and the second installation channel form a fourth water flow channel which is communicated with the second water flow channel. The first water flow channel can be a raw water channel, and the second water flow channel can be a pure water channel. Raw water can enter the first water flow channel, and then the pure water obtained by filtering the raw water through the filtering element can enter the second water flow channel and be discharged, so that the normal filtering function of the filter element is realized. When the filter element needs to be replaced, the first switch element is reset to be in sealing cooperation with the inner wall of the first installation channel, so as to block the first water flow channel. Meanwhile, the first switch element is in sealing cooperation with the second switch element, so as to block the second water flow channel. Therefore, the water in the accommodating cavity cannot be discharged, and the residual water in the filter element can be prevented from spilling out.

The invention relates to the technical field of preparation of drinking water capable of adjusting mineral content, and discloses a preparation method, device and equipment of drinking water capable of adjusting mineral content, the method comprises the following steps: obtaining target mineral content of a first waterway in real time, taking the target mineral content as a core input parameter, and combining with preset mineral content set by a user to obtain a target mineral content; the opening degree of the two independent valves is calculated and controlled in a linkage mode, so that the mineral content of the discharged water is the preset mineral content. The method has the beneficial effects that closed-loop accurate control on the mixing proportion is realized, upstream fluctuation caused by water quality change of raw water or performance degradation of a filter element can be automatically compensated, the mineral content of final effluent can stably reach a user preset value no matter how the water inlet condition changes, and meanwhile, the water quality of the water outlet can be effectively improved by independently controlling the two water paths respectively. The system can respond to the adjusting instruction more flexibly and quickly, and the intelligent level of water treatment equipment and the reliability of personalized drinking experience are remarkably improved.

An arrangement (10) for softening drinking water, comprising (a) a housing with an inlet (16) connected to a drinking water supply and an outlet (18) for softened drinking water; (b) a softening device arranged between the inlet (16) and the outlet (18) for softening the drinking water; (c) a blending valve (54) for mixing softened drinking water and unsoftened raw water; (d) a motor for adjusting the blending valve (54) to a selected mixing ratio of softened drinking water and raw water; (e) a controller (55) for controlling the motor, characterized in that (f) a server (110) is included, on which data on the hardness of the drinking water supplied by waterworks at the respective geographical position of the arrangement are stored, and a data connection (136, 138, 140, 142) of the controller (55) to the server via a network (112). (110) is included;wherein (g) the server (110) is connected via further data connections (136, 138, 140, 142) to further controllers (55) which control co-acting blending valves (54).;

This application discloses an integrated water purifier and heater, including a filtration unit, a room temperature water tank, a hot water tank, and an instant heating device. The instant heating device is located inside the hot water tank. The filtration unit filters raw water into pure water and delivers it to the room temperature water tank. The hot water tank has a water inlet, through which the room temperature water tank can replenish water. When replenishing water from the room temperature water tank to the hot water tank, water in the hot water tank is forced into the instant heating device. The water in the instant heating device can be delivered to the outside of the integrated water purifier and heater or flow back into the hot water tank, so that the water in the hot water tank can be maintained at a temperature not lower than the preset temperature. Because the instant heating device is located inside the hot water tank, heat is transferred to the instant heating device through the hot water in the hot water tank, avoiding the water inside the instant heating device from exchanging heat with the outside atmosphere and cooling down to room temperature. The water inside the instant heating device is in a constant-temperature state, effectively shortening the preheating waiting time, and the set temperature can be quickly reached in the initial stage of water output.

The utility model provides a composite filter element device and water purification equipment, and the composite filter element device comprises a shell which is provided with an inner cavity, a raw water inlet, a primarily filtered water outlet, a primarily filtered water inlet, a pure water outlet and a wastewater outlet, and the primarily filtered water outlet is communicated with the primarily filtered water inlet; the first filtering module is arranged in the inner cavity, is communicated with the raw water inlet and the primarily filtered water outlet, and is used for filtering water output by the water supply device; the second filtering module is arranged in the inner cavity, the second filtering module and the first filtering module are sequentially arranged in the length direction of the shell, a primary filtered water inlet flow channel is defined by the outer wall of the second filtering module, the outer wall of the first filtering module and the cavity wall of the inner cavity, and one end of the primary filtered water inlet flow channel communicates with the primary filtered water inlet; the other end of the primary filtered water inlet flow channel is communicated with the second filtering module; the second filtering module is communicated with the pure water outlet and the wastewater outlet. The overall size of the composite filter element device can be reduced, so that the space occupied by the composite filter element device in the water purification equipment can be reduced.

The invention provides a direct water purification system with an automatic backwashing function, which comprises a raw water inlet part, a first pressure valve, a filtering device, a second pressure valve, a purified water outlet part, a waste water outlet part and an energy recovery waterway, and the energy recovery waterway is in liquid communication with the filtering device, the second pressure valve and the first pressure valve. Wherein the energy recovery waterway is configured to accumulate the purified water to accumulate pressure when the purified water outlet part is closed, and to reversely flow the purified water to the filtering water outlet through the accumulated pressure to clean the filtering assembly. The direct-delivery water purification system with the automatic backwashing function is suitable for automatically cleaning the direct-delivery water purification system after purified water is used and output every time.

This utility model relates to the field of water purification equipment, specifically a portable emergency activated carbon water purification device, comprising: a water purification tank, a primary filtration mechanism fixedly connected to one side of the top of the water purification tank, a filter cover fixedly installed inside the primary filtration mechanism, and multiple sets of scrapers rotatably connected inside the filter cover; the inner wall of the water purification tank is provided with multiple detachable filter layers from top to bottom. Through the primary filtration mechanism, raw water enters the filter cylinder and undergoes gravity sedimentation in the annular gap between the inlet cover and the inner wall of the filter cylinder, achieving the sedimentation and separation of large particulate impurities. The pulverizing blades driven by the drive motor can pulverize larger impurities such as plastic fragments and fibrous materials that are not intercepted by the filter plates, reducing the possibility of clogging the subsequent filtration system; simultaneously, the rotating shaft drives the scrapers to move in a circular motion along the inner side wall of the filter cover, continuously scraping off attached impurities, which are then discharged through a drain pipe.

The invention relates to the technical field of ice making equipment, and provides an ice maker which comprises a base, a shell, a raw water tank, a filtering assembly, a pure water tank, an ice making water tank and a refrigerating assembly. The shell comprises a shell body and a shell forehead, and a first mounting space and a second mounting space are adjacently arranged in the shell body; the raw water tank is arranged in the first mounting space; the filtering assembly is arranged in the first mounting space and adjacent to the raw water tank, and the water inlet end of the filtering assembly communicates with the raw water tank; the first end of the pure water tank is arranged in the forehead of the shell, the second end of the pure water tank is arranged in the first mounting space, and the pure water tank communicates with the water outlet end of the filtering assembly; the ice-making water tank is arranged in the second mounting space and is communicated with the pure water tank; the ice making box is arranged in the ice making water tank; the refrigerating assembly comprises a compressor, and the compressor is arranged in the shell body and located below the raw water tank and the ice-making water tank. The ice maker overcomes the defects that in the prior art, an ice maker is complex in structure, large in occupied space and high in noise in the using process.

This invention discloses an in-situ removal process for total inorganic iodide in water based on oxidation-adsorption, belonging to the field of water treatment technology. The process includes: first, taking raw water containing inorganic iodide, adding bicarbonate and adjusting the pH of the solution to 7-7.5; then, adding ferrous salt to the raw water; finally, adding KMnO4 to the raw water with added ferrous salt under stirring conditions, reacting to prepare a MnO2-nascent iron particle complex; on the one hand, promoting the removal of total inorganic iodide from water through mild oxidation-adsorption. ‑ Oxidation transformation occurs to generate HOI / I2; on the other hand, the in-situ products HOI / I2 are adsorbed and fixed through adsorption / co-precipitation methods, and nascent iron is captured through surface coordination or electrostatic adsorption. This invention achieves the capture of I2 under neutral / weakly alkaline drinking water conditions through a mild and controllable oxidation-adsorption synergistic mechanism. ‑ Simultaneous adsorption and removal of its conversion products are achieved to ensure that total iodine is removed to the required standard.